Ticker tape projecting device



IM 0, 1935. A. D. EITZEN 1,999,183

I TICKER TAPE PROJ ECTING DEVICE I Original Filed April 10, 1929 TTORNEY Patented Apr. 30, 1935 ATNT GFFICE TICKER TAPE PROJECTING DEVICE Application April 10, 1929, Serial No. 354,036 Renewed May 29, 1934 Claims.

My present invention relates generally to stock quotation devices, and has particular reference to a stock quotation projecting machine.

It is customary practice at the present time to 5 associate a stock ticker which is adapted to discharge marked tape in a substantially continuous manner with a projecting device through which the tape is made to pass and by means of which the markings on the tape are displayed upon a in relatively large screen which commands a substantial observation area. After the tape leaves the projecting device it is guided toward a take. up or rewinding mechanism of suitable character.

It is frequently desirable to render the mark- ]3 ings on the tape readable from different observation areas. For example, in many brokerage offices, a separate room is assigned to ladies, and a separate display screen in each room is therefore desirable. Similarly, it is often advantageous to have a main display screen in a public room and a second display screen in a private room. I

Before pointing out the features of my pres-. ent invention, I will premise that the projection of images'onto two separated -screens is a matter of considerable expense where a separate ticker and projecting device are provided for cooperation with each screen. On the other hand, if this expense were to be minimized by employvices through which the tape would successively pass, then the markings projected by the second projecting device would be objectionably late in time so far as the actual stock transactions indicated by such markings are concerned.

It is a general object of my present invention to provide astock quotation projecting machine which may be eificiently and satisfactorily employed for the creation of images of tape markings on two independent and separated screens. without necessitating any of the expense involved in duplication of expensive parts.

Another object is to provide a machine of this character which will serve to create images on at least two screens with the same promptness as the same would have been produced upon a single screen in accordance with-customary,

practice. I

More particularly, it is an object of my invention to provide a projecting machine for use with a pair of differently directed display screens, the machine comprising a common ticker, a common projecting device, and means for creating the desired images in a prompt and eificient manner on both screens.

ing a single ticker and a pair of projecting de- Briefly, I accomplish this general object by creating a main beam of light which emanates from the projecting device after having passed through the tape, and by thereupon directing said beam partially toward one screen and par- 3 tially toward the other screen. In my co-pending application Serial No. 354,034, filed April 10, 1929, I have illustrated and described one manner of accomplishing this object by splitting the main beam into two subordinate beams and l thereupon directing such subordinate beams toward and onto the two display screens respectively,

Where a beam of light is split into two subordinate portions, the intensity of each of the latter is less than that of the original beam. In accordance with my present invention I create a pair of subordinate beams each of which has the same intensity as the initial beam. Briefly, I accomplish this advantageous result by deflecting the entire beam at rapid intervals so that each of the subordinatebeams produced is a pulsating beam. The alternations are of sufficient rapidity to render the images produced by each beam upon one of the screens readable in a satisfactory manner.

It is a featur'e'of my invention to provide a construction which is extremely simple in nature and which involves a minimum of manufacturing cost. For example, in a preferred form, I employ one or more reflectors of simple character and mounted for movement by means of an ordinary electric motor. In addition to the foregoing, the remaining elements of my apparatus constitute very little more than a series of suitable reflecting members which are obviously simple in structural nature, inexpensive, and extremely unlikely to cause any impairment in smooth operation.

For the attainment of the foregoing objects and such other objects as may hereinafter appear or -i be pointed out, I have illustrated one form of my invention in the accompanying drawing, in which- Figure 1 is an elevational view of a projecting device constructed in accordance with my present invention and showing diagrammatically the manner in which imagesare simultaneously produced on a pair of separated screens;

Figure 2 is a view taken from the right of Figure 1; and

Figure 3 is an enlarged view of one portion of the mechanism.

Referring to the drawings, and particularly to Figure 2, I have diagrammatically illustrated a stock ticker ID from which a marked tape H is The foregoing elements are designed to cooperate with a pair of screens l4 and [5. It is to be noted that these screens are spaced from each other, and I have illustratively shown them facing in diametrically opposite directions, thereby serving two different observation areas. l5 may typify a screen which would command an observation area in, for example, one room, and the screen [4 may be said to represent a second screen arranged within an adjoining room.

In accordance with my invention, a suitable source of light (not shown) is arranged within the projecting device I2 and is adapted to project a beam I6 upwardly through the tape H as the latter passes through the device I2. I prefer to arrange an objective ll in the path of this beam. In the illustrated embodiment, the beam I6 is normally so directed from the objective l1 that if it were left unobstructed it would encounter the reflecting member l8 associated with the screen l5, the member l8 serving to reflect the beam onto the reflecting member H], the latter projecting the markings onto the rear of the screen IS in a well known manner.

In order to create two subordinate beams for serving not only the screen l5 but also the second and separated screen [4, I provide means for intermittently interposing at least one reflector into the path of the beam 16. I have illustratively shown an ordinary electric motor 20 whose speed may be regulated by a rheostat 2! or the like. Mounted on the spindle 22 of the motor is a disc 23 which is more clearly illustrated in Figure 3. It will be observed that the disc is provided with three spaced transparent portions 24 which are created in the illustrated form by entirely open spaces or apertures. These spaces are preferably shaped to conform to substantially complete sectors of a circle. Arranged between the portions 24 are the reflectors 25. I have found ordinary plane mirrors to be satisfactory and I arrange them in a common plane, securing them' by any simple manner to the body of the disc 23. The mirrors 25 are also preferably shaped to conform to the sectors lying between the portions 24.

Referring to Figure 2, it will be noted that I have so mounted the motor 20 that the spindle 22 is arranged at an angle of approximately to the axis of the beam I6. Moreover, the motor is so positioned that only one side of the disc 23 crosses the axis ofthe beam. It will be obvious that a rotation of the spindle 22 will alternately interpose the reflectors 25 and the transparent portions 24 into the path of the beam Hi. Whenever one of the spaces 24 is, arranged across the beam, the latter will project upwardly onto the reflector l8. Whenever one of the reflectors 25 crosses the beam, the latter will be deflected in its entirety into the lateral direction indicated at 26. As a result, that portion of the beam l6 which lies above the disc 23 constitutes a pulsating beam 21, and the same will be true of the beam 26. Each of these beams, however, will The screen a mirror 28 arranged at substantially 45 to the beam 26. Another mirror 29 is arranged in a plane approximately 45 to the horizontal and beneath the mirror 28. The beam reflected from the mirror 28 onto the mirror 29 is thence directed onto a mirror 29' arranged in a plane substantially perpendicular to that of the mirror 29. The reflecting member 29' directs the beam upwardly where it is received and directed by a pair of reflecting members 30 and 30' which serve to project the markings onto the rear surface of the screen M. It will be understood that the screens i4 and I5 will be of the well known translucent type which will render the markings readable from the forward faces thereof.

It will thus be seen that my apparatus is extremely simple in structural nature and inexpensive from a manufacturing standpoint. The only moving portion, aside from the movement of the tape through the projecting device, is the spindle 22 of the motor 20 and the disc 23 carried there by. The operation of this member is no more complicated nor more likely to cause impairment of operation than an ordinary electric fan. In certain cases, it may be desirable and satisfactory to mount the motor and its associated parts, along with the reflectors 28, 29, and 29', within the projecting device itself, in which event two spaced upwardly projecting beams would emanate from the device [2.

In general, it will be obvious that changes in the details herein described and illustrated for the purpose of explaining the nature of my invention may be made by those skilled in the art without departing from the spirit and scope of the invention as expressed in the appended claims. It is therefore intended that these details be interpreted as illustrative and not in a limiting sense.

Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent isl. The combination with a standard stock quotation projecting machine having an elongated narrow horizontally disposed light aperture along I which is fed stock'ticker tape having printed matter thereon readable longitudinally thereof, a screen housing disposed above said light aperture with a laterally elongated vertically disposed screen and reflecting means, and an objective elongated vertically disposed screen, means for intermittently intercepting the images received by said objective, said intercepting means consisting of a rotatable disc having a plurality of spaced reflecting sectors, and reflectors for'receiving said intercepted images and directing them to said second vertically disposed screen whereby simultaneously each of said screens will receive projected images of the printed matter on the tape.

2. The combination with a standard stock quotation projecting machine having an elongated narrow horizontally disposed light aperture along which is fed stock ticker tape having printed matter thereon readable longitudinally thereof, a screen housing disposed above said light aperture with a laterally elongated vertically extending screen and reflecting means, and an objective interposed between the tape on said light aperture and said reflecting means for receiving images of the printed matter on the tape and directing them into said screen housing, of a second laterally 

